Three-element vibration damping device connecting damper element with inerter in parallel manner, design method of three-element vibration damping device and assembly method of three-element vibration damping device

A vibration damping device and damping unit technology, which is applied in the direction of inertial effect shock absorbers, shock absorbers, shock absorbers, etc., can solve the problems of positive stiffness energy consumption of spring units, difficult adjustment, easy oil leakage, etc. Eddy current damping coefficient, compact structure, easy disassembly and assembly

Pending Publication Date: 2018-12-18
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

At present, there is little research and development on the ternary passive damping device with parallel damping and inertial mass unit, and the damping unit of the existing damping device with this configuration is prone to oil leakage (traditional viscous damping), difficult to adjust (viscous, Motor damping) and other problems, the positive stiffness of the spring unit (tension and compression spring or leaf spring) is not as good as the negative stiffness energy dissipation and vibration reduction effect, and there is no real device with adjustable damping coefficient, spring stiffness and inertial mass. Further research is needed. Exploration and development of this configuration

Method used

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  • Three-element vibration damping device connecting damper element with inerter in parallel manner, design method of three-element vibration damping device and assembly method of three-element vibration damping device
  • Three-element vibration damping device connecting damper element with inerter in parallel manner, design method of three-element vibration damping device and assembly method of three-element vibration damping device
  • Three-element vibration damping device connecting damper element with inerter in parallel manner, design method of three-element vibration damping device and assembly method of three-element vibration damping device

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Embodiment 1

[0050] like Figure 1 to Figure 6 As shown, a kind of ternary damping device with parallel damping and inertial unit in this embodiment includes a spring unit, a damping unit and an inertial unit, and the damping unit and the inertial unit are connected in parallel with the spring unit in series; the The damping unit includes a ball screw system, a plurality of conductor plates 5, two E-shaped iron cores 16 and multiple sets of first energized coils 15. In this embodiment, the number of conductor plates 5 is three, and they are arranged parallel to each other. It is a circular plate, and the first energized coil 15 adopts four groups; the ball screw system includes a ball screw 2 and a ball nut 18 sleeved on the ball screw 2, the inertia unit includes a flywheel 17, and the ball screw The screw mandrel 2 passes through the ball nut 18, the flywheel 17 and the conductor plate 5 sequentially from top to bottom; the spring unit includes a moving electromagnet 8, a fixed electroma...

Embodiment 2

[0075] Embodiment 2. This embodiment provides a calculation example of the design method of a ternary damping device with parallel damping and inertial mass units, specifically:

[0076] Yueyang Dongting Lake Bridge is located at the interface between Dongting Lake and the Yangtze River. It is a super-large highway bridge connecting Yueyang and Huarong, with a total length of 5747.82m. A total of 222 cables are arranged on the whole bridge. After testing, the A11 cable force downstream of the Yueyang side tower is 3095N, the first-order modal frequency is 1.11Hz, the cable length is 114.72m, and the unit mass is 51.8kg / m.

[0077] Taking the A11 cable as the damping object, the optimal design of the ternary damping device with parallel damping and inertial units for the first-order mode: a refined analysis model for the coupling system of the cable-stayed cable and the ternary damping device based on the finite difference method , using the Runge-Kutta method to solve the free...

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Abstract

The invention belongs to the technical field of structural vibration control, and in particular relates to a three-element vibration damping device connecting a damper element with an inerter in a parallel manner, a design method of the three-element vibration damping device and an assembly method of the three-element vibration damping device. The three-element vibration damping device comprises aspring element, the damper element and the inerter, wherein the damper element is connected in parallel with the inerter and then connected in series with the spring element to form a three-element vibration damping configuration connecting the damper element with the inerter in a parallel manner. The three-element vibration damping device adopts a ball screw system to realize the three-element vibration damping configuration connecting the damper element with the inerter in a parallel manner, and can simultaneously tune the damping force and the inertia force to fully utilize the vibration damping capacity of the damper element and the inerter. In addition, the three-element vibration damping device adopts the assembly technique, and has the advantages of easy adjustment, good durability, high energy dissipation capacity and the like.

Description

technical field [0001] The invention belongs to the technical field of structural vibration control, and in particular relates to a ternary damping device, design and assembly method of parallel damping and inertial mass units. Background technique [0002] In recent years, the theory of structural negative stiffness vibration control and the development of passive and adaptive dampers with parallel "negative stiffness spring units" have provided new theoretical methods and technical means for improving the effect of structural vibration control; the "Inerter" with mass amplification effect "(two-node inertial mass unit, referred to as "inertial mass unit") provides a new basic unit for the research and development of the damper, and the configuration of the damper has been further enriched, and finally formed a system based on the "damping unit-spring unit-inertial unit" The rudimentary form of the structural ternary passive vibration damping theory. Studies have shown tha...

Claims

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Application Information

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IPC IPC(8): F16F7/10F16F6/00
CPCF16F6/00F16F7/1011Y02T90/00
Inventor 汪志昊赵洋田文文王进沛崔凯强侯作云熊坤赵兵徐宙元刘鑫鑫
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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